Polymarket prices Democrats at 65% for 2028; Kalshi puts House odds at 91%
On Polymarket, Democrats are priced at 65% to win the 2028 presidential election. On Kalshi, Democratic odds for the 2026 House have reached 91%. Both platforms are pricing the 2026 midterms and the 2028 presidential race alongside traditional polling. The convergence shows prediction market platforms moving in lockstep on Democratic electoral chances across multiple cycles and chambers. Historical patterns and betting market activity are driving the pricing two years ahead of the presidential contest.
The synchronized Democratic pricing across cycles eliminates the arbitrage opportunities that drew institutional capital when Kalshi and Polymarket diverged on earlier races. Traders who hunted cross-venue edge now face unified prices with no easy spread to harvest. For banks like SocGen feeding these levels into capital markets models, the collapse of inter-venue spreads removes a key data-quality check and concentrates model risk.
The 91% House level in particular means any Republican position faces near-total wipeout with thin recovery upside, while late Democratic buyers pay steep premiums for marginal probability. The presidential price at 65% this far ahead offers no comparable hedge, creating a two-year carry with no intermediate settlement. Any repricing divergence between the platforms on either cycle would signal information asymmetry worth tracking, but convergence has become the default.
The 65% presidential price and 91% House odds add to Kalshi and Polymarket's synchronized Democratic pricing that has already erased cross-platform arbitrage on Senate and House control markets this cycle.